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KC868-A8s uploading errors
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01-25-2023, 06:52 PM
Hello, can someone please show me how to connect this error
A fatal error occurred: MD5 of this file does not match data in flash! I have been trying to upload my code from arduino IDE but it keeps on complaining about that error
01-25-2023, 11:54 PM
which BOARD model you are chosing in your arduino IDE?
01-26-2023, 10:26 AM
do you using KinCony's product?
01-27-2023, 01:39 AM
i think your screen photo's code is not from KinCony demo, what function you need to test with KC868-A8S board?
01-27-2023, 09:33 AM
(This post was last modified: 01-27-2023, 09:50 AM by Auxinne Paul.)
Hello
I recently received KC868-A8S board which I ordered from Aliexpress. I tested almost all sample codes for that board and it worked well but after uploading different sketches like 5 times that board stopped and cannot upload sketch from arduino IDE anymore, even it's sample kincony codes and it is complaining about "A fatal error occurred: MD5 of this file does not match data in flash!". Am having a presentation that am supposed to do with that board tommorow but am afraid that am running out of time and it does not work. Regards Sketch uses 198834 bytes (15%) of program storage space. Maximum is 1310720 bytes. Global variables use 13248 bytes (4%) of dynamic memory, leaving 314432 bytes for local variables. Maximum is 327680 bytes. esptool.py v3.0-dev Serial port COM10 Connecting.... Chip is ESP32-D0WD-V3 (revision 3) Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None Crystal is 40MHz MAC: c4:de:e2:ce:cc:60 Uploading stub... Running stub... Stub running... Changing baud rate to 921600 Changed. Configuring flash size... Auto-detected Flash size: 4MB Compressed 8192 bytes to 47... Writing at 0x0000e000... (100 %) Wrote 8192 bytes (47 compressed) at 0x0000e000 in 0.0 seconds (effective 16384.2 kbit/s)... Hash of data verified. Compressed 17120 bytes to 11164... Writing at 0x00001000... (100 %) Wrote 17120 bytes (11164 compressed) at 0x00001000 in 0.1 seconds (effective 919.2 kbit/s)... File md5: 24c9954f7afba562a71d33a45b047b4b Flash md5: 3b73f40c27a57f309c8763475e434c20 MD5 of 0xFF is da0b27e9990919ee45c13d317593b99f A fatal error occurred: MD5 of file does not match data in flash! Failed uploading: uploading error: exit status 2
01-27-2023, 11:22 AM
see this video: https://www.youtube.com/watch?v=lthKBGacyVs maybe will help you.
01-27-2023, 04:32 PM
(This post was last modified: 01-27-2023, 04:38 PM by Auxinne Paul.)
C:\>python -m esptool --chip esp32 --port COM5 write_flash_status --non-volatile 0
esptool.py v4.4 Serial port COM5 Connecting..... Chip is ESP32-D0WD-V3 (revision v3.0) Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None Crystal is 40MHz MAC: c4:de:e2:ce:cc:60 Uploading stub... Running stub... Stub running... Initial flash status: 0x0200 Setting flash status: 0x0000 After flash status: 0x0200 Hard resetting via RTS pin... I did all that but still it doesnt work C:\Users>python -m esptool --chip esp32 --port COM5 --baud 115200 --after hard_reset erase_flash esptool.py v4.4 Serial port COM5 Connecting..... Chip is ESP32-D0WD-V3 (revision v3.0) Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None Crystal is 40MHz MAC: c4:de:e2:ce:cc:60 Uploading stub... Running stub... Stub running... Erasing flash (this may take a while)... Chip erase completed successfully in 0.0s Hard resetting via RTS pin... Initial flash status: 0x0200 Setting flash status: 0x0000 After flash status: 0x0200 Hard resetting via RTS pin... I think the problem is that the initial flash status is 0x0200 and after trying to set it to 0x0000 it still remains on 0x0200 as indicated above
yes, not start begin 0x0 address, because KinCony's firmware have compiled begin at 0x0, but your own code BIN file should begin at 0x20000 will be ok.
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